<template>
  <el-container class="home_container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商管理后台系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollpase ? '64px' : '200px'">
        <div class="shuxain" @click="shuXian">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu
              background-color="#333744"
              text-color="#fff"
              active-text-color="#409EFF"
              unique-opened :collapse="isCollpase"
              :collapse-transition="false" router
              :default-active="activePath">
              <!-- 一级菜单 -->
              <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
                <template slot="title">
                  <i :class="iconsObj[item.id]"></i>
                  <span>{{item.authName}}</span>
                </template>
                <!-- 二级菜单 -->
                <el-menu-item :index="'/' + subItem.path + ''"
                              v-for="subItem in item.children"
                              :key="subItem.id"
                              @click="saveNameState('/' + subItem.path + '')">
                  <template slot="title">
                    <i class="el-icon-menu"></i>
                    <span>{{subItem.authName}}</span>
                  </template>
                </el-menu-item>
              </el-submenu>
            </el-menu>
      </el-aside>
      <!-- 右侧主体区域 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 获取左侧菜单的数据
      menuList: [],
      iconsObj: {
        125: 'iconfont icon-touxiang',
        103: 'iconfont icon-component-full',
        101: 'iconfont icon-bag',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      // 是否折叠
      isCollpase: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('./login')
    },
    // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menuList = res.data
      console.log(res)
    },
    // 点击按钮,切换菜单的折叠与展开
    shuXian() {
      this.isCollpase = !this.isCollpase
    },
    // 保存链接的激活状态
    saveNameState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped="">
  .home_container {
    height: 100%;
  }
  .el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 0;
    color: #fff;
    font-size: 20px;
    div {
      display: flex;
      align-items: center;
      span {
        margin-left: 15px;
      }
    }
  }
  .el-aside {
    background-color: #333744;
    .el-menu {
      border-right: none;
    }
  }
  .el-main {
    background-color: #eaedf1;
  }
  .iconfont {
    margin-right: 10px;
  }
  .shuxain {
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.1rem;
    cursor: pointer;
  }
</style>
